We walked to Kanda area then to Akihabara. Akihabara is behind of Kanada from Tokyo station.
When that time, we found several nice restaurant which have outdoor terraces. Many people take beer around there. And they are using under the JR rail lines. When we go to Akihabara, we just saw the place.
The place not only for restaurant but also some sundry goods shops. It is so interesting place not only for japanese but also international tourist. Some young and not famous artists sell many items. They are bit modern but also traditional design. And the design beings oversea stile to japanese stile. The prices are also not so experience.
If you have some experience to go only center of akihabara, then you should try such spot ^^
Akihabara mAAch. http://www.maach-ecute.jp/
mAAch. in English http://www.maach-ecute.jp.e.of.hp.transer.com/
The beer event is not permanently. it has summer only event.
Check following page
in english http://www.maach-ecute.jp.e.of.hp.transer.com/event/182.html